{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machine or equipment", "engineering feature", "process characterization", "process parameter", "enabling technology"], "input": "The changes in microstructure and dislocations of thin wall structure treated by UPT in three directions were observed ."}
{"machine or equipment": [], "engineering feature": [], "process characterization": [], "process parameter": [], "enabling technology": []}